Key-bolt lock.



J. ADAMS, J11. KEY BOLT LOCK.

APPLICATION FILED AUG. 1, 1912 1,070,385, I Patented Au 19, 1913.

j/M/Y 4" lUldllTlED PATENT @FFTQE.

JOSEPH ADAMS, JR., 0]? TOLEDO, OHIO.

KEY-BOLT LOCK.

Specification of Letters Patent.

Patented Au 19,1913.

1 0 all whom it may concern Be it known that I, Josnrn ADAMS, J11,citizen of the United States, residing at tioledo, in the county ofLucas and State of Ohio, have invented certain new and usefulImprovements in Key-Bolt Locks, of which the it'ollowing is aspecification, reference being had therein to the accompanying drawing.

This invention relates to safety key-bolt locks, and has for its objectthe production of an efficient key which may be placed through a boltfor holding two sections of material together.

The principal object of this invention 1s the production of anel'licient key which may be formed from the least amount of material andmay be so inserted and bent as to form an etlicient lock for preventingthe accidental removal of a bolt from the support or material throughwhich the bolt passes.

Another object of the invention is the production of an efficient keywhich may be easily inserted in a bolt and easily bent to constitute aneflicient lock.

with these and other objects in view, this invention consists in certainnovel details of construction and combinations of parts as will behereinafter fully described, illustrated in the accompanying drawings,and specifically claimed.

In the drawings, Figure 1 is a side elevation of a bolt showing thesupport in section. Fig. 2 is a section taken on line Q Q of 1. Fig. 3is a transverse sectional view through the locking key taken on line ri-ii of Fig. 2. Fig. t is a detailed perspective view of the locking keyin its assembled position. Fig. a detailed perspective of one section ofa locking key. F 6 is a plan view of a bar from which the keys are made.

By referring to the drawings by numerals, it will be seen that 1designates a bolt which is provided near its outer end with atransversely extending aperture 2, which aperture may be so formed inthe bolt as to allow a locking pin to pass therethrough for efli cientlyholding the bolt in its desired position.

A key 3 passes through the aperture 2 formed in the bolt, and comprisesa primary section 4 and an auxiliary section 5, which sections areformed similarly so as to allow the sections of the key to be formedfrom an elongated bar, as indicated at 6 in T Big. 6. The sections ofthe key comprise an enlarged body portion 7 and the reduced projectingends 8. These ends are so formed to extend longitudinally of theopposite sides of the body portion 7, as indicated clearly in Fig. 6,and by so forming the keys or sections of the keys, it will be seen thatthe sections may be constructed from one elongated bar since theprojecting arm of one key will interlock with the projecting arm of theother key whilebeing formed, and in this manner it will be seen thatthere will be no wasted material in manufacturing the keys. The sections4: and 5 are preferably formed semicircular in cross section so as toproduce a circular body as illustrated in F ig. 3 to pass through theaperture 2 formed in the bolt 1.

The sections of the key are formed semicircular in cross section, havingone flat face 9, and the flat faces 9 of each of the sections areadapted to abut, as illustrated in Fig. 8, thereby producing a circularkey in cross section when the two sections of the key are placedtogether. It will, therefore, be seen that owing to the formation of thekeys, the different sections may be readily inserted in the bolt. Eachsection of the key is preferably formed so as to have one of theprojecting ends 8 bend up to constitute a hook, as indicated at 10 inFig. 5, and the other section of the key is then placed upon the firstsection so as to have the hook 10 extend in an opposite direction to thehook of the other section. After the two sections of the key have thusbeen interlocked within the bolt, the projecting ends 8, as illustratedin Fig. 4, are bent back over the shoulders 11 formed upon the oppositesections of the key to the position as illustrated in Fig. 2. It will,therefore, be seen that the two sections of the key will be firmlyinterlocked together owing to the overhanaging ends or hooks 10 whichare formed by the projecting ends 8 being folded over. The outer ends ofthe proj ecting ends 8 are bent back so as to lie flush against theedges of the bolt, as illustrated in Fig. 2, and it will, therefore, beseen that the pin will be held against the rotation owing to the factthat the ends of the projecting ends 8 will extend beyond a line drawnacross the edge of the aperture 2. as indicated by AA in Fig. 2.

As clearly illustrated in Fig. 5, it will be seen that the projectingends 8 taper toward their outer ends for facilitating the bending of theends to the desired position, as illustrated at 12 in Fig. 5.

From the foregoing description, it will be seen that a very simple andefficient device has been produced whereby a very material saving in thematerial out of which the lock is to be constructed has been produced.llurthermore, it will be seen that the key may be easily and quicklylocked upon the bolt in view of the fact that the shoulders 11 willconstitute a means for guiding the ends 8 while being bent so as toconstitute the loops or hooks 10, as illustrated clearly in Fig. 2.

There has thus been provided a simple and efficient device of the kinddescribed, and for the purpose specified.

Having thus described the invention, what is claimed as new, is

1. An article of the class described comprising a bolt provided with atransversely extending aperture, a key passing through said aperture andcomprising a pair of sections, and hooks formed upon each end of eachsection and engaging the sides of said bolt for preventing the removalof said key from said bolt.

2. A locking key for a bolt comprising a primary and an auxiliarysect-ion similarly constructed, each section provided with acomparatively narrow, elongated, project ing end upon each end thereof,the projecting end upon each section extending parallel to the oppositesides of said sections and being bent backwardly to constitute hooks forengaging a support whereby said key will be held against accidentalremoval from the bolt.

3. A key of the class described comprising a primary and an auxiliarysection, each section comprising a body portion provided withcomparatively narrow, projecting ends, the ends of said body portionextending in alinement with the opposite sides oi said body portion, andbent back upon said body portion for overhanging the cooperating sectionfor firmly holding said sections iogether and preventing the accidentalremoval of said key from a support.

4i. A key of the class described formed from a blank strip of materialcomprising a primary and an auxiliary similarly constructed sections,each section comprising a widened body portion having a reduced end ofone-half the width of said body portion. one projecting end of said bodyportion extending in alinement with the opposite side of said bodyportion to the other end, a shoulder formed upon each end of said bodyportion, the shoulder upon one end of said body portion being inalinement with the projecting end upon the other end of said bodyportion, said primary and auxiliary sections fitting adjacent eachother, and the projecting ends of said primary section bent around theshoulders of the other section for firmly holding said sections togetherand preventing the accidental removal of said key from a support.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

JOSEPH ADAMS, J 1:. Witnesses:

I J. DOLAN, ANNA J AQUILLARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

